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11x=3(9+x)
We move all terms to the left:
11x-(3(9+x))=0
We add all the numbers together, and all the variables
11x-(3(x+9))=0
We calculate terms in parentheses: -(3(x+9)), so:We get rid of parentheses
3(x+9)
We multiply parentheses
3x+27
Back to the equation:
-(3x+27)
11x-3x-27=0
We add all the numbers together, and all the variables
8x-27=0
We move all terms containing x to the left, all other terms to the right
8x=27
x=27/8
x=3+3/8
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